@article{doi:10.1001/archsurg.2011.160,
author = {Hemmila M},
title = {Propensity score methods: Setting the score straight—reply},
journal = {Archives of Surgery},
volume = {146},
number = {7},
pages = {887-889},
year = {2011},
doi = {10.1001/archsurg.2011.160},
URL = { + http://dx.doi.org/10.1001/archsurg.2011.160},
eprint = {/data/Journals/SURG/22568/slt0711_888_889.pdf}
}